24V Systems
Kit Ref: K/INST/24V
The latest UDM-J type head unit
operates from 10 - 30V DC, as do the
sensors, therefore a 24V-12V voltage
dropper is not required.
Earlier head units require the voltage
dropper. The wiring scheme is shown
below for reference to older installa-
tions.
Installation
Fig. 26 24V Power Supply
Brown 24V
Blue 12V
Black
Brown
24V - 12V
Convertor